What's surprising about this certainty is that it's lifted from a Rolling Stone piece - hell, it even links to a Rolling Stone piece which is a little less certain:

Beach Boys Consider Reunion For 50th Anniversary

And you can see why they are perhaps less certain of their scoop than the NME is. Because they thought better of just taking Jardine's word for it:

A source close to Mike Love says there have been discussions for a reunion concert, but nothing is set. Brian Wilson's manager, Jean Sievers, says she's unfamiliar with reunion plans. "Brian has a big new album coming out in August [Brian Wilson Reimagines Gershwin]," says Sievers, "and that's what he's a hundred percent focused on."

Funnily enough, Jardine has a product he's trying to find a label for:

While [his A Postcard From California] album is available on iTunes, Jardine hopes to find a distributor to put it out on proper CD. "Beach Boys fans would rather have something they can touch," he says. "I thought I'd get it out now and then take advantage of the second opportunity when the anniversary kicks in next year."

So this 'done deal' for a reunion looks a bit more like an attempt to leverage some money out of a record label by talking up the chances that the release could be timed to hook-up with a big party. It might have been handy for the NME readership to have been told that before they went off to queue for tickets.